Even after the closing of the factory in Kalamazoo in 1984, this process was continued until 1989 in Nashville.In 2005 the system was upgraded to first digit at the end of the batch number was inserted.1935-1937: Letter between the batch number and the order number. 0123 A5 1938-1941: Two or three letters before batch number. If there is a second character follows it is the code for the type of the instrument.
Gibson has used various methods of numbering from 1900, so it is not simply based on the serial number to identify the year of manufacture..From 1902 to 1976, Gibson instruments have a serial number or a FON (Factory Order Number) or both.If follows there is a third letter E, it stands for Electric.Exceptions: Some high-end models and lap steels from 1939-1940 have been added the letter A, to the prefixes D, E or F.The batch number, the first four digits of the FON, followed by a one or two-digit number. The first digit of the serial number is the last digit of the year.
If the stamped number consists 5 digits, there is a space between the first and second digit (a separation between the last digit of the year and the actual serial number).
Guitars got six digits in any order, and in some cases they were preceded by a letter that none seemed to have no smeaningful sense.
Note that the series of between 19, may be an overlap from production in 19.
The three intermediate digits, the day of that year. After opening of the new factory in Nashville, in the sequence numbers were also included the production site.
001 to 499 appeared on the instruments built in Kalamazoo, 500 to 999 built in Nashville.
the next four numbers are the production number that month (they only produced 9999 pieces each month)..(example) ..